Improvement in cooking-stoves



E. JOHNSON, J r.

Cooking Stove. No. 36,714. Patented 0m. 21, 1862.

UNITED STATES EDWARD JOHNSON, JR.,

PATENT OFFICE.

OF CLEVELAND, OHIO.

IMPROVEMENT IN COOKlNG-STOVES.

Specification forming part of Letters Patent No. 36,714, dated October21, IE'GQ.

To all whom it may concern;

Be it known that I, EDWARD JOHNSON, J r., of Cleveland, in the county ofOuyahoga and State of Ohio, have invented new and useful Improvements inStoves; and I do hereby declare that the following is a full andcomplete description of the construction and operation of the same,reference being had to the accompanying drawings, making part of thisspecification, in which Figure 1 is a perspective view,and Fig. 2 avertical section.

Like letters refer to like parts in the different views.

The nature of my invention relates to constructing the stove-oven ofcorrugated sheetiron, thereby accomplishing three important objectsnamely, protecting the top of the oven from too great heat, compensatingfor the expansion and contraction of the metal,

and enabling me to construct a durable and efficient cooking-stovewholly or in part of sheet-iron.

There is nothing peculiar in the form of my improved stove. 1t may bemade in the form shown in the figures, or it may be varied in form. Thebed-plate A in Figs. 1 and 2 may be made either of cast or sheet metal.Castiron is perhaps the most economical. The sides B and ends B may bemade of the same material or sheet-iron. The corrugated ovenplate G ismade of one entire piece of plate of a width just sufficient to fill thespace be- ,tween the side plates. A double ledge or projection (seen atD D) serves to keep the corrugated plate in place. By means of thecorrugations the ashes that collect in the firebox and upon the top ofthe oven serve to modify the heatradiated from the top plate of theoven. The oven-plate, being constructed as described, presents abouttwice the amount of radiating-surface that would be presented by a flatplate, and hencea greater radiation of heat and the accomplishment ofthe desired object with a less amount of fuel.

As stoves are usually constructed, the fireflue extends only upon threesides of the oven-namely, the top, the back, and the bottom. I havetherefore in the construction of my improved oven-plate extended it onlyupon the three parts named. The front of the oven being narrow andfurnished with no flue, it is not necessary to extend the corrugatedplate over that part, for its extension there could serve no purpose,but it could be thus extended if found necessary to extend the fire-flueor fire-surface upon the front. I, however, disclaim the use ofcast-iron corru gated plates for ovens, as also linings of sheet metalnor corrugated for ovens.

What I claim as m'yimprovement, and desire to secure by Letters'Patent,is

, Making the'oven-plate of cooking-stoves of one entire piece ofcorrugated sheet-iron, as and for the purpose substantially as hereinset forth.

EDW'ARD JOHNSON, JR. Witnesses:

J. BRAINERD, W. H. BURRIDGE.

